Chronic Venous Insufficiency: Symptoms, Causes and UK Management

Chronic Venous Insufficiency (CVI) is a long-term medical condition where the valves in the leg veins do not work efficiently. In a healthy body, these valves act as one-way gates, ensuring blood flows upwards towards the heart against gravity. When these valves become damaged or weakened, blood pools in the lower legs—a process known as venous stasis.

In the UK, CVI is incredibly common, particularly as people age. While it is often associated with visible varicose veins, CVI can also occur deep within the legs without obvious external signs. According to NICE (National Institute for Health and Care Excellence) guidance, early intervention is key to preventing the progression from simple swelling to more severe complications like skin ulceration.

The symptoms of CVI often worsen throughout the day, particularly if you have been standing or sitting for long periods. British patients frequently report a pattern of 'heavy legs' by the evening. Key symptoms include:

• Oedema: Swelling in the ankles and lower legs that may improve after a night's sleep.
• Aching or Cramping: A dull, heavy pain in the calves, sometimes accompanied by a throbbing sensation.
• Skin Changes: Known as varicose eczema or stasis dermatitis, the skin may become red, itchy, or flaky.
• Haemosiderin Staining: Brownish discolouration of the skin near the ankles caused by leaked blood cells.
• Lipodermatosclerosis: The skin becomes hard, tight, and woody to the touch.

CVI is typically caused by a combination of high pressure within the veins (venous hypertension) and damaged vein walls. Several factors increase the likelihood of developing the condition:

Age and Genetics

Ageing naturally weakens vein walls. Furthermore, if your parents suffered from varicose veins or leg ulcers, you are at a higher risk.

Lifestyle Factors

Occupations that require prolonged standing (such as nursing or retail) or sitting for long durations can exacerbate the condition. Obesity also puts significant pressure on the venous system.

Medical History

A history of Deep Vein Thrombosis (DVT) is a major risk factor, as the clot can permanently damage the valves. This is sometimes referred to as post-thrombotic syndrome.

Management of CVI in the UK focuses on reducing the pressure in the legs and improving circulation. The primary treatment recommended by the NHS is compression therapy. High-grade compression stockings help squeeze the leg muscles, assisting the veins in pushing blood upwards.

Other management strategies include:

• Leg Elevation: Raising your legs above the level of your heart for 30 minutes several times a day to reduce swelling.
• Exercise: Regular walking encourages the 'calf muscle pump', which is vital for venous return.
• Skin Care: Using unperfumed emollients to keep the skin hydrated and prevent the cracks that lead to infection (cellulitis).
• Weight Loss: Reducing overall body weight to lower the pressure on leg veins.

Managing a chronic condition like CVI requires regular monitoring. You can speak to a GP online to discuss your symptoms and receive a professional assessment from the comfort of your home. During a consultation, you can share photos of skin changes or swelling to help the doctor understand the severity of your condition.

An online doctor can provide advice on the correct grade of compression stockings, discuss weight management plans, and help you understand when you might need a referral to a vascular specialist for procedures like endothermal ablation or sclerotherapy. If you are struggling with the discomfort of itchy varicose eczema, they can also suggest appropriate topical treatments.

One of the most significant risks of unmanaged CVI is the development of a venous leg ulcer. These are chronic wounds that take more than two weeks to heal. They usually form on the inside of the ankle and can be painful and prone to infection. By managing CVI early through lifestyle changes and compression, the risk of ulceration is significantly reduced. If you notice any break in the skin that isn't healing, it is vital to seek medical advice promptly to begin a wound care plan.